本帖最后由 fht000 于 2020-12-4 09:14 编辑
本帖主要用来回复这篇帖子的问题https://www.52pojie.cn/thread-1319246-1-1.html
@zxcvbnm12 希望对你有所帮助本来想在他本人的帖子上回复,但是无法在评论区回复中上传本地图片所以开了这个帖子
这是DepartmentDao :
[Java] 纯文本查看 复制代码 @Component
public class DepartmentDao {
//模拟数据库中的数据
private static Map<Integer, Department> departments = null;
static {
departments = new HashMap<Integer, Department>();//创建一个部门表
departments.put(101, new Department(101, "部门表1"));
departments.put(101, new Department(101, "部门表2"));
departments.put(101, new Department(101, "部门表3"));
departments.put(101, new Department(101, "部门表4"));
departments.put(101, new Department(101, "部门表5"));
}
//获得所有部门信息
public Collection<Department> getDepartments() {
return departments.values();
}
//通过id得到部门
public Department getDepartment(Integer id){
return departments.get(id);
}
@AllArgsConstructor
@Data
public static class Department{
private int id;
private String departmentName;
}
}
这是EmployeeDao:
[Java] 纯文本查看 复制代码 @Component
public class EmployeeDao {
//模拟数据库中的数据
private static Map<Integer,Employee> employees;
@Autowired
private DepartmentDao departmentDao;
//员工有所属的部门
static {
employees = new HashMap<Integer, Employee>();//创建一个员工表
employees.put(101,new Employee(101,"AA1","123@1123.com",1,new DepartmentDao.Department(101,"dwqdx")));
employees.put(102,new Employee(102,"AA2","123@1123.com",1,new DepartmentDao.Department(102,"dwqdx")));
employees.put(103,new Employee(103,"AA3","123@1123.com",1,new DepartmentDao.Department(103,"dwqdx")));
employees.put(104,new Employee(104,"AA4","123@1123.com",1,new DepartmentDao.Department(104,"dwqdx")));
employees.put(105,new Employee(105,"AA5","123@1123.com",1,new DepartmentDao.Department(105,"dwqdx")));
}
//主键自增！
private static Integer initId=1006;
//增加一个员工
public void save(Employee employee){
if(employee.getId() == 0){
employee.setId(initId++);
}
employee.setDepartment(departmentDao.getDepartment(employee.getDepartment().getId()));
employees.put(employee.getId(),employee);
}
//查询全部员工信息
public Collection<Employee> getAll(){
return employees.values();
}
//通过id查询员工
public Employee getEmployeeById(Integer id)
{
return employees.get(id);
}
//删除员工通过id
public void delete(Integer id){
employees.remove(id);
}
@AllArgsConstructor
@Data
public static class Employee{
private int id;
private String lastName;
private String email;
private int gender;
private DepartmentDao.Department department;
private Date birth;
public Employee(int id, String lastName, String email, int gender, DepartmentDao.Department department) {
this.id = id;
this.lastName = lastName;
this.email = email;
this.gender = gender;
this.department = department;
}
}
}
这是EmployeeController:
[Java] 纯文本查看 复制代码 @Controller
public class EmployeeController {
@Autowired
EmployeeDao employeeDao;
@RequestMapping("/emps")
public String list(Model model) {
Collection<EmployeeDao.Employee> employees = employeeDao.getAll();
model.addAttribute("emps",employees);
return "table";
}
}
这是html:
[HTML] 纯文本查看 复制代码 <!DOCTYPE html>
<html lang="en" xmlns:th="http://thymeleaf.org">
<table class="table table-striped table-sm">
<thead>
<tr>
<th>id</th>
<th>lastname</th>
<th>email</th>
<th>gender</th>
<th>department</th>
<th>birth</th>
</tr>
</thead>
<tbody>
<tr th:each="emp:${emps}">
<td th:text="${emp.id}"></td>
<td>nihao</td>
<td th:text="${emp.email}"></td>
<td th:text="${emp.gender}"></td>
<td th:text="${emp.department.departmentName}">11</td>
<td th:text="${emp.lastName}"></td>
<td >
<button class="btn btn-sm btn-primary">编辑</button>
<button class="btn btn-sm btn-danger">编辑</button>
</td>
</tr>
</tbody>
</table>
</html>
这是properties:
[HTML] 纯文本查看 复制代码 server.port=8899
# Spring配置
spring.thymeleaf.mode=HTML
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html
spring.thymeleaf.cache=false
spring.thymeleaf.encoding=UTF-8
这是pom:
[XML] 纯文本查看 复制代码 <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
运行后的结果:
重建个项目,复制粘贴总行了吧 | 
发表于 2020-12-4 09:02
|
发表于 2020-12-4 10:27
